Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2307.07897 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918091200397312 |
|---|---|
| author | Konishi, Yukiko Minabe, Satoshi |
| author_facet | Konishi, Yukiko Minabe, Satoshi |
| contents | In arXiv:2004.01871 Satake introduced the notions of admissible triplets and good basic invariants for finite complex reflection groups. For irreducible finite Coxeter groups, he showed the existence and the uniqueness of good basic invariants. Moreover he showed that good basic invariants are flat in the sense of K.Saito's flat structure. He also obtained a formula for the multiplication of the Frobenius structure. In this article, we generalize his results to finite complex reflection groups. We first study the existence and the uniqueness of good basic invariants. Then for duality groups, we show that good basic invariants are flat in the sense of the natural Saito structure constructed in arXiv:1612.03643. We also give a formula for the potential vector fields of the multiplication in terms of the good basic invariants. Moreover, in the case of irreducible finite Coxeter groups, we derive a formula for the potential functions of the associated Frobenius manifolds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_07897 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Satake's good basic invariants for finite complex reflection groups Konishi, Yukiko Minabe, Satoshi Algebraic Geometry Mathematical Physics Primary 53D45, Secondary 20F55 In arXiv:2004.01871 Satake introduced the notions of admissible triplets and good basic invariants for finite complex reflection groups. For irreducible finite Coxeter groups, he showed the existence and the uniqueness of good basic invariants. Moreover he showed that good basic invariants are flat in the sense of K.Saito's flat structure. He also obtained a formula for the multiplication of the Frobenius structure. In this article, we generalize his results to finite complex reflection groups. We first study the existence and the uniqueness of good basic invariants. Then for duality groups, we show that good basic invariants are flat in the sense of the natural Saito structure constructed in arXiv:1612.03643. We also give a formula for the potential vector fields of the multiplication in terms of the good basic invariants. Moreover, in the case of irreducible finite Coxeter groups, we derive a formula for the potential functions of the associated Frobenius manifolds. |
| title | Satake's good basic invariants for finite complex reflection groups |
| topic | Algebraic Geometry Mathematical Physics Primary 53D45, Secondary 20F55 |
| url | https://arxiv.org/abs/2307.07897 |